milton0825 commented on a change in pull request #8852:
URL: https://github.com/apache/airflow/pull/8852#discussion_r428248777



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File path: airflow/models/dagrun.py
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@@ -431,6 +432,7 @@ def verify_integrity(self, session=None):
         # check for removed or restored tasks
         task_ids = []
         for ti in tis:
+            task_instance_mutation_hook(ti)

Review comment:
       For cases that we want to mutate task instances before each executions. 
For example, re-routing to different queue for retries.




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